Ventilator



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Patented Sept. 30, 1924, A

THEODOB ELTING, 0F CHICAGO, ILLINOIS.

VENTILATOR.

Application filed December 9, 1930. Serial No. 429,404.

To all whom t may concern.'

Be it known that I, Trinonon EL'rING, a citizen of the United States,residing at Chicago, county of Cook, and State of Illinois, haveinvented a new and useful Improvement in Ventilatore, of which thefollowing is a specification. l

The invention relates to ventilators, especially of the kind employedfor removing foul air from shops, plants, and the like.

It is an object of the invention to provide a ventilator which has ahigh degree of suction and is thus distinguished by its greatefficiency.

A further object of the invention aims at the provision of a ventilatorwhich is of eX- tremely simple construction, devoid of movable parts,louvers, attachments, and the like, thus rendering the apparatusfoolproof. Y

It is also an object of the invention to construct the ventilator so asto prevent rain or snow from entering.

A further object of the invention aims at the construction of aventilator that will prevent the setting up of a back draft, whereby thefoul air would be forced back into the building.

With these and other objects in view, which will appear as thedescription of the invention proceeds, the invention comprises the meansset forth in the following specilication, particularly pointed out inthe claims forming a' part thereof, and illustrated in the accompanying`drawing, in which:

Fig. 1 is a perspective view of a ventilator constructed in accordancewith the invention. v

Fig.'2 is a sectional elevation of the ven tilator.`

Fig. 3 isa cross-section one the line' 3 3 of Fig. 2.

Referring to the several views of the drawing, 1 indicates a cylindricalcasing or shell, which has a diameter suflicient for thc purposes forwhich the ventilator is intended. The vheight of the cylinder iscommensurate with the suction to be created whereby the foul air is tobe removed from the shop, plant, or other building, where sufficientventilation is to be maintainech The cylinder is formed by rolling asheet metal Vplate and riveting the meeting ends "to- 'gethen Thecylinder 1 is provided with a plurality of openings 2 which areelongated in vertical direction and narrow in circumferentialdirect-ion, as shown in the preferred embodiment of the invention.

In the drawing, the cylindrical shell 1 is equipped with six openings 2,but any other number of openings may be chosen if so desired. Thelongitudinal edges of the openings 2 are bent upon themselves, asindicated at 3, so as to provide reinforcements and curved portions forthe egress of the foul air. The cylinder has six openings and ahexagonal casing 4 is provided to surround the shell, the latter alsobeing provided with openings 5 elongated in vertical direction andnarrow in horizontal direction. Attention is called to the fact that theopenings 5 are opposed to an imperforate part of the shell 1, so thatthe air egressing from the shell is forced to flow in a circuitous path,as will be readily established from the drawing. The vertical edges ofthe openings 5 are provided with `flanges 6 extending at right angles tothe panels of the casing 4, and the upper horizontal edge is providedwith a flange 7, which acts as a spacer for the outer cover plateshereinafter referred to and prevents rain from entering.

The cylindrical shell has secured thereto a circumferential ring 9 byrivets or the like, and this ring` is offset at its upper end withrelation to the cylinder to provide a circumferential groove into whichextends the edge 10 of a horizontal flange 11 formed at the lower end ofthehexagonal casing 4. To the panels of the hexagonal casing 4, aplurality of brackets 8 and 12 are'secured and the outer ends of said.brackets'are riveted to plates`13, which are arranged parallel to thepanels of the casing 4 and which plates 13 maintain a distance fromeac-h other at the sides to provide a passage for the egress of air. Theflange 7 serves as a spacervv for the plates 13 prior to their beingriveted to the brackets 12. The hexagonal casing 4'is closed up atthetop by a pyramidal cover 15 which is permanently secured to the upperend of the casing 4 by any approved or convenient means, and, as shownin the drawing, the upper end of the casing 4 is bent outwardly anddownwardly to receive the lower end of the cover 15, whichis bentdownwardly and upwardly.

From the foregoing iti obvious that a ventilator is provided which isdistinguished by a very simple and rigid construction; the ventilator isdevoid of loose, rattling parts, and thus continuously operates withoutrequiring any supervision or repairs. The ventilator is closed at thetop and on the sides by virtue of the cover plates, and is protectedagainst the `entrance of wind, rain or snow, thus precluding thepossibility of back draft being set up, which would force foul air toflow baelr into the building.

The operation of the ventilator is thought 1,flto be obvious. By reasonof the hexagonal construction of the casing and the similar arrangementof the cover plat-es 13 the vrind pressure existing at the top of thebuilding vwill flowalongside the panels or plates 13 and at the edgesthereof will set up a suction which. will cause the foul air to flowfrom the building through the shell l past the openings 2, thencethrough the openings 5 ,and discharge through the passage between tWoadjoining plates 13. Rain or snow is prevented from entering theventilator Yinasmuch as the same is closed up at the top and -by virtueof the arrangement of the openings and passages which provide atort-nous Orcircuitous path, so that no danger exists that a backpressure will be set up. Y

Y lVhile the drawing discloses a hexagonal ventilator it is, of course,within the scope of the invention to increase or decrease, the numberVof sides selected for the casing although it has been found by practicalexperiments and researches that a hexagonal ventilator is the preferredform. The manner of securing the parts of the ventilator together mayalso be varied and if preferred screw connections instead of rivetingmay be employed. The drawing does not disclose any changes ormodifications but no intention prevails of limiting` the invention tothe precise construct-ion as shown, as changesand alterations areincluded within the scope of the invention'which is defined bytheyfollowing claims.

I claim:

l, A ventilator, comprising a cylindrical. shell having a plurality ofspaced openings, ya polygonal casing comprising a plurality of connectedpanels spaced from said shell and `provided with openings, said last'named openings being opposed to imperiorate parts of said shell, and aplurality of plates spaced from each other and from said panels andmeans for supporting said plates directly from said panels of saidcasing.

2. 'A ventilator, comprising a cylindrical shell, a polygonal casingsurrounding said rshe-ll to define an annular air channel therebetween,landspaced plates parallel to the panels of said *casing and securedthereto and wholly supported thereby, said casing and shell beingprovided With openings to constitute a circ-uitous path for the egressof air. i v i 3. A ventilator, comprising a cylindrical.

shell having a plurality of spaced openings elongated in verticaldirection, a polygonal casing surrounding said shell to define anannular air channel therebetween, said cas-- ing having openingselongated in vertical direction and opposed to iinperforate parts ofsaid shell. and shields parallel to the panels ot said casing andsecured directly thereto and wholly supported thereby to provideopenings at the top and bottoni. adjacent edges ot said. shields being`spaced to provide passages for the egress of air.

4T. A ventilator` comprising a cylindriial shell, a polygonal casingsurrouiuling said shell to define an annular air channel therebetween,spaced plates parallel to the panels of said casing secured directlythereto and wholly supported thereby, said casing and shell beingprovided with openings which constitute a circuitous path for the egressof air, and a cover closing the upper open end of said casing.

5. A ventilator, comprising a cylindrical shell, a polygonal easingsurroundingr said shell to define an annular air channel therebetween,spaced plates parallel to the panels of said casing and secured directlythereto and supported thereby, said casing and shell being provided withopenings to constitute a circuitous path for the egress of air, and.means for entirely support-ing said casing at the lower end thereoffrom said shell.

6. A ventilator, comprising a cylindrical shell having a plurality ofspaced openings elongated in vertical direction, a polygonal casingsurrounding said shell to define an annular air channel therebetween,said casing having openings elongated in vertical direction and opposedto imperforate parts of said shell. the edges of said ca sing open ingsbeing formed with flanges extending at right angles to the panels ofsaid casing, and shields parallel to the panels of said casingl andsecured directly to said flanges. adjacent edges of said shields beingspaced to provide passages for the egressing air.

7. ln a ventilator, the combination of a` cylindrical shell providedwith a circumferential series of elongated openings, a hexagonal casingsurrounding the shell and having in each of the sides thereof an elongatedl opening presented to an imperforate part of the shell. bracketsextending from the sides of said casing. plates arranged over each sideof the easing and supported entirely on said brackets in spaced relationto the sides of said casing and to each other to afford air passagesopen on all sides` and means .for supporting said easing and plateswholly at the bottom on said shell.

8. In a ventilator` the combination of a cylindrical shell provided witha circumferential series of elongated openings, a

=" on the external surfaces of each of the sides ot the casing, platesdisposed over each Side of the casing and Wholly supported on saidbrackets in spaced relation to the sides of the casing and to each otherto afford air passages open on all sides, and a circumferentiallyextending flange on the outer tace of said shell to receive one end ofsaid easing and `form the sole support for said casing.

9. In a ventilator, in combination, a cylindrical central shell, havinga plurality of openings, a polygonal casing surrounding and in spacedrelation to said shell, said casing having openings in the sides thereofpresented to imperforate parts of said shell, plates rigidly secured tothe side of said casing. and means circumferentially arranged on saidshell for readily removably supporting said easing and plates as a uniton said shell. i

In testimony whereof, I atlix my signature in the presence of twoWitnesses at S6 Nest Randolph St., Chicago, Illinois.

THEODOR ELTING. "Witnesses:

DANIEL A. BRENNAN, DOROTHY WISE.

